Home / 328,145.10-492,217.65-221,856.90

Finding the Fourth Proportional to 328,145.10, 492,217.65 and 221,856.90

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Solution

The fourth proportional to 328,145.10, 492,217.65 and 221,856.90 is: 332,785.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,145.10 : 492,217.65 = 221,856.90 : x
  2. Step 2: Convert to fraction form
    328,145.10/492,217.65 = 221,856.90/x
  3. Step 3: Cross multiply
    328,145.10x = 492,217.65 × 221,856.90
  4. Step 4: Simplify right side
    328,145.10x = 109,201,881,954.29
  5. Step 5: Solve for x
    x = 109,201,881,954.29/328,145.10
  6. Step 6: Final answer
    x = 332,785.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.